9. Conduit Sizing Calculation

Sizing Conduits - Fill Factor

Fill factor or conduit fill, states the maximum amount of space that the installed cables should occupy in a given size conduit, expressed as a percentage of the interior volume. On the subject of fill factor percentages, Consider the percentages that are mandated by the National Electrical Code, Chapter 9, Table 1 . where the table indicates number of conductors, the word conductors, may also indicate multi-conductor cables. For example, if we were planning to pull three cables into a conduit, the combined cross-sectiona area of the three cables, must not exceed 40% of the conduits interior volume. Because the table does not specify high or low-voltage cable(s), it can cable(s),

National Electrical Code, Chapter 9, Table 1

Table 1 is based on common conditions of proper cabling and alignment of conductors, where the length of the pull and number of bends are within reasonable limits. It should be recognized that, for certain conditions, a larger size conduit, lesser conduit fill should be considered.

The smallest percent fill, on the table is for two conductors (no more than 31% of the conduits interior volume). The reason for this is that two conductors, of the same size, collectively form an oval shape. One, or any number of cables greater than two, will tend to form a circular shape (see figure ZZ).

FIGURE ZZ

10 - Conduit Sizing Calculation

2

31%

1

53%

Number of ConductorPercent Fill (all conductor types)

over 2

40%

1 Contract No. PID N-075106

Calculating Fill Factor

When we calculate fill factor, normally we start out knowing how many cables we need to get from point A to point B. The question is: What size conduit? Or, sometimes a conduit will be existing and we will need to calculate the amount of cables that we may install in it. Once you master the principles of NEC Table 4, and the formula for cross-sectional area, you can easily find either.

Rigid PVC Conduit

0.50.75

11.251.52

2.53

3.5456

Electrical Metallic Tubing NEC Table 4 (Continued)

1

112

23

34

Note: Shown is only the Electrical Metallic Tubing (EMT) portion of NEC table 4.Determine the cross-sectional area(CSA), for each cable, simply add the CSA (or multiply for same size cables) for each cable to find the Total CSA

5.9014.57314.753

3.5384.6183.57911.545

8.8462.3431.8165.8582.7311.3421.043.3562.0670.8140.6312.0361.61

0.3461.0490.5980.4641.4961.38

1 Wire53%

Sq. In.

0.161

Over 2 Wires 40%

Sq. In.

0.1220.2130.165

0.2680.86

2 Wires31%

Sq. In.

1.9972.6933.49

0.127

0.53

5.535

0.2130.383

1.711

0.0670.217

Over 2 Wires 40%

Sq. In.

NEC Table 4

2 Wires31%

Sq. In.

Total Area 100%Sq. In.

0.6841.151.6472.577

0.8911.277

1 Wire53%

Sq. In.

0.1150.2170.365

5.9679.463

13.567

1.1523

4.6053.4142.183

4.5037.142

10.239

0.495

3.475

1.9132.29

Trade Size

Inches

0.7220.9361.2551.476

2.864

Total Area 100%Sq. In.

0.087

1.237

Internal Diameter

Inches

0.4090.688

0.526

11.25817.855

2.8744.1196.4428.6883.326

3.7864.7685.709 7.935

0.0940.304

2.7423.3563.834

25.935

3.105

7.819

Trade Size

Inches

Internal Diameter

Inches

0.6220.824 0.533

4.334

0.1640.275

0.6560.907

0.2830.4580.7931.0791.778

6.1194.688


Radius of BendsTo comply with the NEC, need only use a standard conduit bending devise, or purchase pre-fabricated bends.Manufacturers of conduits and their bending apparatuses, make their products to comply with the NEC table 343-10.On bend radius for Nonmettalic Conduit and NEC table 346-10 EMT Conduit.

Nonmettalic Conduit Size Standard with its Radius of Bends Comply With the NEC Table 343-10

EMT Conduit Size Standard with its Radius of Bends Comply With the NEC Table 346-10

2 3

44.5

10

Radius of Bends

4 6048

Conduit Size Radius of Bends

13

11

8.259.5

1 2

5.757.25

10.5

41516

3

12

Conduit Size

1820

36

11 1

2

14

2 3

26


SR.

NO.

NO OF SET

CABLE

NO.

total Cross Sec.area

In2

1 5 CA - 06 ( 3 - 1C 300 + 1- 1C 300 ) + 1- 1C 95 2.66955482 4 CA - 07 ( 3 - 1C 185 + 1- 1C 185 ) + 1- 1C 50 1.3830582

CA - 07A ( 3 - 1C 120 ) + 1- 1C 25 1.3830582CA - 07B ( 3 - 1C 70 + 1- 1C 70 ) + 1- 1C 16 1.1980631CA - 07C ( 3 - 1C 120 ) + 1- 1C 25 1.3830582CA - 07D ( 3 - 1C 185 + 1- 1C 185 ) + 1- 1C 50 2.6695548CA - 07E ( 3 - 1C 70 + 1- 1C 70 ) + 1- 1C 16 1.1980631CA - 07F ( 3 - 1C 25 + 1- 1C 25 ) + 1- 1C 10 0.6707226

CA - 07G ( 3 - 1C 70 + 1- 1C 70 ) + 1- 1C 16 1.1980631CA - 07H ( 3 - 1C 16 + 1- 1C 16 ) + 1- 1C 10 0.4937581CA - 07I ( 3 - 1C 6 + 1- 1C 6 ) + 1- 1C 6 0.3513981CA - 07J ( 3 - 1C 4 + 1- 1C 4 ) + 1- 1C 4 0.2981043CA - 07K ( 3 - 1C 4 + 1- 1C 4 ) + 1- 1C 4 0.2981043CA - 07L ( 3 - 1C 6 + 1- 1C 6 ) + 1- 1C 6 0.3513981CA - 07M ( 3 - 1C 6 + 1- 1C 6 ) + 1- 1C 6 0.3513981CA - 07N ( 3 - 1C 10 + 1- 1C 10 ) + 1- 1C 10 0.4090722

3 3 CA -08 ( 3 - C 150 + 1- 1C 150 ) + 1- 1C 50 2.250992CA -08A ( 3 - C 25 ) + 1- 1C 10 0.5234956CA -08B ( 3 - C 50 + 1- 1C 50 ) + 1- 1C 16 0.9255106CA -08C ( 3 - C 25 ) + 1- 1C 10 0.5234956CA -08D ( 3 - C 50 + 1- 1C 50 ) + 1- 1C 16 0.9255106CA -08E ( 3 - C 35 + 1- 1C 35 + 1- 1C 10 0.6074515

CA -08F ( 3 - C 35 + 1- 1C 35 ) + 1- 1C 10 0.7826638CA -08G ( 3 - C 25 + 1- 1C 25 ) + 1- 1C 10 0.6707226CA -08H ( 3 - C 6 + 1- 1C 6 ) + 1- 1C 6 0.3513981CA -08I ( 3 - C 6 + 1- 1C 6 ) + 1- 1C 6 0.3513981CA -08J ( 3 - C 6 + 1- 1C 6 ) + 1- 1C 6 0.3513981CA -08K ( 3 - C 6 + 1- 1C 6 ) + 1- 1C 6 0.3513981

4 3 CA -09 ( 3 - C 185 + 1- 1C 185 ) + 1- 1C 50 2.6695548

CA -09A ( 3 - C 10 ) + 1- 1C 10 0.3272577CA -09B ( 3 - C 25 + 1- 1C 25 ) + 1- 1C 10 0.6707226CA -09C ( 3 - C 10 + ) + 1- 1C 10 0.3272577CA -09D ( 3 - C 4 + 1- 1C 4 ) + 1- 1C 4 0.2981043

226.708 EMT 32mm263.917 EMT 32mm

192.325 EMT 25mm226.708 EMT 32mm

211.1336

EMT

EMT

40mm

110mm

25mm

32mm

25mm

50mm32mm50mm40mm40mm40mm32mm32mm

EMT

432.7234

226.708

PVC

EMT

EMT

EMTEMTEMTEMT

32mm

25mm

EMT

110mmPVC

EMTEMT

391.9034504.9434432.7234226.708

EMT226.708

892.2938772.9424892.29381722.29772.9424432.7234772.9424318.553

32mm

EMTEMTEMT

EMT

Total Cross Section area

for Cables mm2CROSS SECTION AREA mm2

PVC

EMT

1722.29

1722.29

192.325226.708

Conduit

type

RGS

32mm25mm

EMTEMTEMTEMTEMTEMT

50mm40mm50mm32mm

CON.DIM

(mm)

110mm

110mm

75mm

63mm50mm63mm

226.708

337.7384

192.325

1722.29

211.1336

597.1024337.7384597.1024

1452.25

EMT


SR.

NO.

NO OF SET

CABLE

NO.

total Cross Sec.area

In2

CA -09E ( 3 - C 50 + 1- 1C 50 ) + 1- 1C 16 0.9255106CA -09F ( 3 - C 25 + 1- 1C 25 ) + 1- 1C 10 0.6707226CA -09G ( 3 - C 70 + 1- 1C 70 ) + 1- 1C 16 1.1980631

CA -09H ( 3 - C 50 + 1- 1C 50 ) + 1- 1C 16 0.93CA -09I ( 3 - C 4 + 1- 1C 4 ) + 1- 1C 4 0.3202979CA -09J ( 3 - C 6 + 1- 1C 6 ) + 1- 1C 6 0.3513981CA -09K ( 3 - C 6 + 1- 1C 6 ) + 1- 1C 6 0.3513981

5 2 CA -10 ( 3 - C 150 + 1- 1C 150 ) + 1- 1C 50 2.250992CA -10A ( 3 - C 10 ) + 1- 1C 10 0.3272577CA -10B ( 3 - C 25 + 1- 1C 25 ) + 1- 1C 10 0.6707226CA -10C ( 3 - C 10 ) ) + 1- 1C 10 0.3272577CA -10D ( 3 - C 16 + 1- 1C 16 ) + 1- 1C 10 0.4937581CA -10E ( 3 - C 16 + 1- 1C 16 ) + 1- 1C 10 0.4937581CA -10F ( 3 - C 25 + 1- 1C 25 ) + 1- 1C 10 0.6707226CA -10G ( 3 - C 16 + 1- 1C 16 ) + 1- 1C 10 0.4937581CA -10H ( 3 - C 16 + 1- 1C 16 ) + 1- 1C 10 0.4937581CA -10I ( 3 - C 6 + 1- 1C 6 ) + 1- 1C 6 0.3513981

6 CA -11 ( 3 - C 50 + 1- 1C 50 ) + 1- 1C 16 0.9255106CA -11A ( 3 - C 16 + 1- 1C 16 ) + 1- 1C 10 0.4937581CA -11B ( 3 - C 16 + 1- 1C 16 ) + 1- 1C 10 0.4937581CA -11C ( 3 - C 16 + 1- 1C 16 ) + 1- 1C 10 0.4937581

7 5 CA - 05 ( 3 - 1C 300 + 1- 1C 300 ) + 1- 1C 95 4.44479664 CA - 05A ( 3 - 1C 185 + 1- 1C 185 ) + 1- 1C 50 2.66955484 CA - 05B ( 3 - 1C 185 + 1- 1C 185 ) + 1- 1C 50 2.66955484 CA - 05C ( 3 - 1C 185 + 1- 1C 185 ) + 1- 1C 50 2.6695548

Area for cross section= X

32mm

EMT 25mmEMT 32mm

40mmEMT597.1024

EMT

1722.29

EMTEMTEMT

EMT

318.553

32mm

25mm40mm

32mm32mm40mm

32mm

50mm

25mm

432.7234

1452.25 PVC 110mm

EMTEMTEMT

432.7234

211.1336

772.9424

206.6434

226.708226.708

597.1024

211.1336318.553

226.708318.553

EMT

432.7234

EMTEMT

EMT

32mm

PVC 110mm

110mm

110mm

110mm

50mm

3.14

CROSS SECTION AREA mm2

597.1024

( r )2

318.553 EMT

1722.29

110mm

Total Cross Section area

for Cables mm2

Conduit

type

CON.DIM

(mm)

32mm

318.553 EMT 32mm

PVC

EMT318.553

2867.605

1722.29

RGS

PVC

PVC

50mm

EMT 32mm318.553


CA - 06 ( SET 1) Area for cross section= X

Area for cross section= X 210.3 = 660.19Area for cross section= X 210.3 = 660.19Area for cross section= X 72.25 = 226.87Total Cross Section area = 3 X + 660.2 + 226.87 = 2868 mm2

= In2

From NEC Table 4 (rigid PVC conduit-1 Wire 40 %Sq. In.) . We choose the conduit size


Area for cross section= X 126.6 = 397.41Area for cross section= X 126.6 = 397.41Area for cross section= X 42.25 = 132.67

Total Cross Section area = 3 X + 397.4 + 132.7 = 1722 mm2

= In2


CA - 07AArea for cross section= X 84.64 = 265.77Area for cross section= X 30.25 = 94.99

Total Cross Section area = 3 X + 0 + 94.99 = 892 mm2

= In2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .We choose the conduit size=

CA - 07B Area for cross section= X 56.25 = 176.63 Area for cross section= X 56.25 = 176.63 Area for cross section= X 21.16 = 66.44

Total Cross Section area = 3 X + 176.6 + 66.44 = 773 mm2= In2


CA - 07C Area for cross section= X 84.64 = 265.77 Area for cross section= X 30.25 = 94.99

Total Cross Section area = 3 X + 0 + 94.99 = 892 mm2= In2


3.14 mm2 (E.Conductor)

63mm

265.77

= 892.2938 /

25 mm2 = 3.14 mm2 (E.Conductor)120 mm2 = 3.14 mm2 (Ph.Conductor)

50mm

772.9424 /176.63

= 645.16

16 mm2 = 3.14 mm2 (E.Conductor)70 mm2 = 3.14 mm2 (N.Conductor)

= / 645.16 1.383058156

mm2 = 3.14 mm2 (E.Conductor)

265.77

mm2 (E.Conductor)

110mm

/ 645.16 2.669554839

3.14

892.2938

= 1722.29

12025

63mm

70 mm2 = 3.14

mm2 =

397.41

50 mm2 = 3.14

185185 mm2 =

mm2 =

mm2 =

3.14 ( r )2

mm2 (N.Conductor)

mm2 (Ph.Conductor)mm2 (N.Conductor)

1.198063116

1.383058156

mm2 (Ph.Conductor)

mm2 (Ph.Conductor)

95

300 mm2 (Ph.Conductor)

645.16 4.44479664

300 mm2 = 3.14

( r )2

660.19

= 2867.605 /

3.14mm2 = 3.14

3.14

3.14

110mm

645.16


CA - 07D Area for cross section= X 126.6 = 397.41 Area for cross section= X 126.6 = 397.41 Area for cross section= X 42.25 = 132.67



CA - 07E Area for cross section= X 56.25 = 176.63 Area for cross section= X 56.25 = 176.63 Area for cross section= X 21.16 = 66.44


= In2


CA - 07F Area for cross section= X 30.25 = 94.99 Area for cross section= X 30.25 = 94.99 Area for cross section= X 16.81 = 52.78


= In2


CA - 07G Area for cross section= X 56.25 = 176.63 Area for cross section= X 56.25 = 176.63 Area for cross section= X 21.16 = 66.44


= In2


CA - 07H Area for cross section= X 21.16 = 66.44 Area for cross section= X 21.16 = 66.44 Area for cross section= X 16.81 = 52.78


= In2


645.16 0.493758138

32mm

66.442

= 318.553 /

10 mm2 = 3.14 mm2 (E.Conductor)16 mm2 = 3.14 mm2 (N.Conductor)16 mm2 = 3.14 mm2 (Ph.Conductor)

645.16 1.198063116

50mm

176.63

= 772.9424 /


645.16 0.670722611

40mm

94.985

= 432.7234 /


645.16 1.198063116

50mm

176.63

= 772.9424 /


2.669554839

75mm

70 mm2 = 3.14 mm2 (Ph.Conductor)

397.41

= 1722.29 /


645.16


CA - 07I Area for cross section= X 14.44 = 45.34 Area for cross section= X 14.44 = 45.34 Area for cross section= X 14.44 = 45.34


= In2


CA - 07J Area for cross section= X 12.25 = 38.47 Area for cross section= X 12.25 = 38.47 Area for cross section= X 12.25 = 38.47


= In2


CA - 07K Area for cross section= X 12.25 = 38.47 Area for cross section= X 12.25 = 38.47 Area for cross section= X 12.25 = 38.47


= In2


CA - 07L Area for cross section= X 14.44 = 45.34 Area for cross section= X 14.44 = 45.34 Area for cross section= X 14.44 = 45.34


= In2


CA - 07M Area for cross section= X 14.44 = 45.34 Area for cross section= X 14.44 = 45.34 Area for cross section= X 14.44 = 45.34


= In2


6 mm2 = 3.14

6 mm2 = 3.14 mm2 (E.Conductor)6

45.342

=

32mm

226.708 /

mm2 = 3.14 mm2 (N.Conductor)

32mm

45.342

= 226.708 /


25mm

6 mm2 = 3.14

38.465

= 192.325 /


645.16

645.16 0.298104346

mm2 (Ph.Conductor)

645.16 0.351398103

645.16

25mm

38.465

= 192.325 /


32mm

45.342

= 226.708 / 645.16


0.298104346

0.351398103

mm2 (Ph.Conductor)

0.351398103


CA - 07N Area for cross section= X 16.81 = 52.78 Area for cross section= X 16.81 = 52.78 Area for cross section= X 16.81 = 52.78


= In2


CA -08 ( Area for cross section= X 105.1 = 329.90 Area for cross section= X 105.1 = 329.90 mm2 (N.Conductor) Area for cross section= X 42.25 = 132.67 mm2 (E.Conductor)


= In2

From NEC Table 4 (rigid PVC conduit-1 Wire 40 %Sq. In.) .We choose the conduit size

CA -08A

Area for cross section= X 30.25 = 94.99 mm2 (Ph.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor)


= In2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .We choose the conduit size

CA -08B

Area for cross section= X 42.25 = 132.67 mm2 (Ph.Conductor) Area for cross section= X 42.25 = 132.67 mm2 (N.Conductor) Area for cross section= X 21.16 = 66.44 mm2 (E.Conductor)


= In2


CA -08C

Area for cross section= X 30.25 = 94.99 mm2 (Ph.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor)


= In2


10 mm2 = 3.14

52.783

645.16 0.409072168

32mm

= 263.917 /

10 mm2 = 3.1410 mm2 = 3.14 mm2 (N.Conductor)

=

10 mm2 = 3.14

94.985

132.67

25 mm2 = 3.14

= 597.1024 /

50mm

0.523495567

32mm

25

50 mm2 = 3.1450

= 337.7384 /

32mm

mm2 = 3.1416 mm2 = 3.14

110mm

645.16

645.16

mm2 =150

10 mm2 = 3.14

15050

329.9

1452.25 / =

mm2 =

3.143.143.14

mm2 =

mm2 = 3.14

94.985

337.7384 /

0.523495567645.16

2.250992002645.16

SET 1)mm2 (Ph.Conductor)

0.925510571

mm2 (Ph.Conductor)

mm2 (E.Conductor)


CA -08D

Area for cross section= X 42.25 = 132.67 mm2 (Ph.Conductor) Area for cross section= X 42.25 = 132.67 mm2 (N.Conductor) Area for cross section= X 21.16 = 66.44 mm2 (E.Conductor)


= In2


CA -08E

Area for cross section= X 36 = 113.04 mm2 (Ph.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor)


= In2


CA -08F Area for cross section= X 36 = 113.04 mm2 (Ph.Conductor) Area for cross section= X 36 = 113.04 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor)


= In2


CA -08G Area for cross section= X 30.25 = 94.99 mm2 (Ph.Conductor) Area for cross section= X 30.25 = 94.99 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor)


= In2


CA -08H Area for cross section= X 14.44 = 45.34 mm2 (Ph.Conductor) Area for cross section= X 14.44 = 45.34 mm2 (N.Conductor) Area for cross section= X 14.44 = 45.34 mm2 (E.Conductor)


= In2


645.16

645.16

645.16 0.351398103

0.782663835

32mm

45.342

= 226.708 /

6 mm2 = 3.146 mm2 = 3.14

= 432.7234 / 645.16

40mm

6 mm2 = 3.14

10 mm2 = 3.14

94.985

25 mm2 = 3.1425 mm2 = 3.14

10 mm2 = 3.14

40mm

113.04

= 504.9434 /

391.9034 / 645.16

35 mm2 = 3.1435 mm2 = 3.14

3.143.14

=

= 597.1024 /

35 mm2 =10 mm2 =

50 mm2 = 3.1416

50 mm2 = 3.14

0.925510571

0.607451485

0.670722611

50mm

mm2 = 3.14

132.67

113.04

40mm


CA -08I Area for cross section= X 14.44 = 45.34 mm2 (Ph.Conductor) Area for cross section= X 14.44 = 45.34 mm2 (N.Conductor) Area for cross section= X 14.44 = 45.34 mm2 (E.Conductor)


= In2


CA -08J Area for cross section= X 14.44 = 45.34 mm2 (Ph.Conductor) Area for cross section= X 14.44 = 45.34 mm2 (N.Conductor) Area for cross section= X 14.44 = 45.34 mm2 (E.Conductor)


= In2


CA -08K Area for cross section= X 14.44 = 45.34 mm2 (Ph.Conductor) Area for cross section= X 14.44 = 45.34 mm2 (N.Conductor) Area for cross section= X 14.44 = 45.34 mm2 (E.Conductor)


= In2


CA -09 ( SET 1) Area for cross section= X 126.6 = 397.41 mm2 (Ph.Conductor) Area for cross section= X 126.6 = 397.41 mm2 (N.Conductor) Area for cross section= X 42.25 = 132.67 mm2 (E.Conductor)


= In2


CA -09A Area for cross section= X 16.81 = 52.78 mm2 (Ph.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor)

Total Cross Section area = 3 X + 52.78 = 211 mm2

= In2


645.16

645.16

0.327257735

0.351398103

645.16

32mm

52.783

3.14

110mm

= 226.708 /

6 mm2 = 3.146 mm2 = 3.14

45.342

6 mm2 = 3.14

32mm

mm2 = 3.14

45.342

= 226.708 /

6 mm2 = 3.146 mm2 = 3.146

211.1336 / 645.16

= 1722.29 /

25mm

=

1010 mm2 =

mm2 =

2.669554839

397.41

0.351398103

50mm2 =mm2 =

3.14185 3.14185

mm2 =

3.14

3.14

6 mm2 = 3.146 mm2 = 3.146 mm2 = 3.14

45.342

0.351398103

32mm

= 226.708 / 645.16


CA -09B Area for cross section= X 30.25 = 94.99 mm2 (Ph.Conductor) Area for cross section= X 30.25 = 94.99 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor)


= In2


CA -09C Area for cross section= X 16.81 = 52.78 mm2 (Ph.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor)

Total Cross Section area = 3 X + 52.78 = 211 mm2

= In2


CA -09D Area for cross section= X 12.25 = 38.47 mm2 (Ph.Conductor) Area for cross section= X 12.25 = 38.47 mm2 (N.Conductor) Area for cross section= X 12.25 = 38.47 mm2 (E.Conductor)


= In2


CA -09E Area for cross section= X 42.25 = 132.67 mm2 (Ph.Conductor) Area for cross section= X 42.25 = 132.67 mm2 (N.Conductor) Area for cross section= X 21.16 = 66.44 mm2 (E.Conductor)


= In2


CA -09F Area for cross section= X 30.25 = 94.99 mm2 (Ph.Conductor) Area for cross section= X 30.25 = 94.99 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor)


= In2


0.670722611

40mm

94.985

50mm

645.16

25mm

645.16

25mm

40mm

0.327257735

645.16 0.298104346

0.925510571

645.16 0.670722611 = 432.7234 /

25 mm2 = 3.1410 mm2 = 3.14

25 mm2 = 3.14

= 597.1024 /

16 mm2 = 3.14

132.67

50 mm2 = 3.1450 mm2 = 3.14

= 192.325 /

4 mm2 = 3.14

38.465

4 mm2 = 3.14

52.783

= 211.1336 /

4 mm2 = 3.14

10 mm2 = 3.1410 mm2 = 3.14

3.1425

94.985

mm2 = 3.14

mm2 =25 mm2 = 3.1410

645.16 = 432.7234 /


CA -09G Area for cross section= X 56.25 = 176.63 mm2 (Ph.Conductor) Area for cross section= X 56.25 = 176.63 mm2 (N.Conductor) Area for cross section= X 21 16 = 66 44 mm2 (E Conductor) Area for cross section= X 21.16 = 66.44 mm2 (E.Conductor)


= In2


CA -09H Area for cross section= X 42.25 = 132.67 mm2 (Ph.Conductor) Area for cross section= X 42.25 = 132.67 mm2 (N.Conductor) Area for cross section= X 21 16 = 66 44 mm2 (E Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor)


= In2


CA -09I Area for cross section= X 12.25 = 38.47 mm2 (Ph.Conductor) Area for cross section= X 12.25 = 38.47 mm2 (N.Conductor) Area for cross section= X 16 81 = 52 78 mm2 (E Conductor) Area for cross section= X 12.25 = 38.47 mm2 (E.Conductor)


= In2


CA -09J Area for cross section= X 14.44 = 45.34 mm2 (Ph.Conductor) Area for cross section= X 14.44 = 45.34 mm2 (N.Conductor) Area for cross section= X #N/A = #N/A mm2 (E Conductor) Area for cross section= X 14.44 = 45.34 mm2 (E.Conductor)


= In2


CA -09K Area for cross section= X 14.44 = 45.34 mm2 (Ph.Conductor) Area for cross section= X 14.44 = 45.34 mm2 (N.Conductor) Area for cross section= X #N/A = #N/A mm2 (E Conductor) Area for cross section= X 14.44 = 45.34 mm2 (E.Conductor)


= In2


6 mm2 = 3.146 mm2 = 3.14

645.16 0.351398103

32mm

45.342

= 226.708 /

4 mm2 = 3.14

16

4 mm2 = 3.14

70

/

mm2 = 3.1410

645.16

176.633.14mm2 =

1.198063116

645.16 0.320297911

645.16 0.351398103

50mm

= 772.9424

mm2 = 3.1470 mm2 = 3.14

4 mm2 = 3.14

50

38.465

= 206.6434 /

25mm

6 mm2 = 3.146 mm2 = 3.14

45.3426 mm2 = 3.14

= 226.708 /

32mm

6 mm2 = 3.14

50 mm2 = 3.14

mm2 = 3.14132.67

= 597.1024 / 645.16 0.925510571

50mm


CA -10 (SET 1) Area for cross section= X 105.1 = 329.90 mm2 (Ph.Conductor) Area for cross section= X 105.1 = 329.90 mm2 (N.Conductor) Area for cross section= X 42.25 = 132.67 mm2 (E.Conductor)



CA -10A Area for cross section= X 16.81 = 52.78 mm2 (Ph.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor).


= In2


CA -10B Area for cross section= X 30.25 = 94.99 mm2 (Ph.Conductor) Area for cross section= X 30.25 = 94.99 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor).


= In2


CA -10C Area for cross section= X 16.81 = 52.78 mm2 (Ph.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor).


= In2


CA -10D Area for cross section= X 21.16 = 66.44 mm2 (Ph.Conductor) Area for cross section= X 21.16 = 66.44 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor).


= In2


= 318.553 /66.442

0.493758138

32mm

645.16

16 mm2 = 3.1410 mm2 = 3.14

0.327257735

25mm

16 mm2 = 3.14

= 211.1336 / 645.16

10 mm2 = 3.14

52.783

10 mm2 = 3.14

= 432.7234 /94.985

0.670722611

40mm

645.16

25 mm2 = 3.1410 mm2 = 3.14

25 mm2 = 3.14

= 211.1336 /52.783

0.327257735

25mm

645.16

10 mm2 = 3.1410 mm2 = 3.14

329.9

110mm

645.16 2.2509920021452.25 /

150 mm2 = 3.1450 mm2 = 3.14

=

150 mm2 = 3.14


CA -10E Area for cross section= X 21.16 = 66.44 mm2 (Ph.Conductor) Area for cross section= X 21.16 = 66.44 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor).


= In2


CA -10F Area for cross section= X 30.25 = 94.99 mm2 (Ph.Conductor) Area for cross section= X 30.25 = 94.99 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor).


= In2


CA -10G Area for cross section= X 21.16 = 66.44 mm2 (Ph.Conductor) Area for cross section= X 21.16 = 66.44 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor).


= In2


CA -10H Area for cross section= X 21.16 = 66.44 mm2 (Ph.Conductor) Area for cross section= X 21.16 = 66.44 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor).


= In2


CA -10I Area for cross section= X 14.44 = 45.34 mm2 (Ph.Conductor) Area for cross section= X 14.44 = 45.34 mm2 (N.Conductor) Area for cross section= X 14.44 = 45.34 mm2 (E.Conductor).


= In2


0.351398103

32mm

= 226.708 / 645.16

6 mm2 = 3.14

45.342

6 mm2 = 3.146 mm2 = 3.14

645.16 0.493758138

32mm

66.442

= 318.553 /

16 mm2 = 3.1410 mm2 = 3.14

0.670722611

40mm

16 mm2 = 3.14

= 432.7234 / 645.16

10 mm2 = 3.14

94.985

25 mm2 = 3.1425 mm2 = 3.14

645.16 0.493758138

32mm

66.442

= 318.553 /

16 mm2 = 3.1410 mm2 = 3.14

16 mm2 = 3.14

16 mm2 = 3.1416 mm2 = 3.1410 mm2 = 3.14

66.442

0.493758138

32mm

= 318.553 / 645.16


CA -11 (SET 1)

Area for cross section= X 42.25 = 132.67 mm2 (Ph.Conductor) Area for cross section= X 42.25 = 132.67 mm2 (N.Conductor) Area for cross section= X 21.16 = 66.44 mm2 (E.Conductor).


= In2


CA -11A Area for cross section= X 21.16 = 66.44 mm2 (Ph.Conductor) Area for cross section= X 21.16 = 66.44 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor).


= In2

From NEC Table 4 (rigid EMTconduit-1 Wire 40 %Sq. In.) .We choose the conduit size

CA -11B Area for cross section= X 21.16 = 66.44 mm2 (Ph.Conductor) Area for cross section= X 21.16 = 66.44 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor).


= In2


CA -11C Area for cross section= X 21.16 = 66.44 mm2 (Ph.Conductor) Area for cross section= X 21.16 = 66.44 mm2 (N.Conductor) Area for cross section= X 16.81 = 52.78 mm2 (E.Conductor).


= In2





= In2


645.16 4.44479664

110mm

660.19

= 2867.605 /

95 mm2 = 3.14 mm2 (E.Conductor)

mm2 (Ph.Conductor)300 mm2 = 3.14 mm2 (N.Conductor)

3.14 ( r )2

300 mm2 = 3.14

645.16 0.493758138

32mm

66.442

= 318.553 /

16 mm2 = 3.1410 mm2 = 3.14

16 mm2 = 3.14

3.14

16 mm2 = 3.14

0.493758138

32mm

66.442

318.553 /

50 mm2 = 3.14

645.16 =

16 mm2 = 3.1410 mm2 =

50 mm2 = 3.1416 mm2 = 3.14

132.67

0.925510571

110mm

= 597.1024 / 645.16

16 mm2 = 3.1416 mm2 = 3.1410 mm2 = 3.14

66.442

= 318.553 / 645.16 0.493758138

32mm


CA - 05A




= In2


CA - 05B




= In2


CA - 05C




= In2


645.16 2.669554839

110mm

397.41

= 1722.29 /



3.14 ( r )2

185 mm2 = 3.14

645.16 2.669554839

110mm

397.41

= 1722.29 /



3.14 ( r )2

185 mm2 = 3.14

645.16 2.669554839

110mm

397.41

= 1722.29 /



3.14 ( r )2

185 mm2 = 3.14


Documents

9. Conduit Sizing Calculation